I have upgraded to Python 3 and can't figure out how to convert backslash escaped newlines to HTML. The browser renders the backslashes literally, so "\n" has no effect on the HTML source. As a result, my source page is all in one long line and impossible to diagnose.
I spent hours searching for the solution to no avail. Can anyone help?
Maybe I don't get it, but isn't <br /> some kind of newline for HTML?
s = "Hello HTML\n"
to_render = s.replace("\n", "<br />")
If you render something with mimetype "text/plain" \newlines should work.
normally I do like this s=s.replace("\n","<br />\n")
because
<br /> is needed in web page display and
\n is needed in source display.
just my 2 cents
Print() should add a newline by default - unless you tell it otherwise. However there have been other changes in Python 3:
Old: print "The answer is", 2*2
New: print("The answer is", 2*2)
Old: print x, # Trailing comma suppresses newline
New: print(x, end=" ") # Appends a space instead of a newline
Old: print # Prints a newline
New: print() # You must call the function!
Old: print >>sys.stderr, "fatal error"
New: print("fatal error", file=sys.stderr)
Old: print (x, y) # prints repr((x, y))
New: print((x, y)) # Not the same as print(x, y)!
Old = Python 2.5, New = Python 3.
More details here: http://docs.python.org/3.1/whatsnew/3.0.html
It turns out that Chinese characters (晉) in the string is causing Unicode to do something unknown. But I'm getting closer!
The solution is:
#!/usr/bin/python
import sys
def print(s): return sys.stdout.buffer.write(s.encode('utf-8'))
print("Content-type:text/plain;charset=utf-8\n\n")
print('晉\n')
See the original discussion here: http://groups.google.com/group/comp.lang.python/msg/f8bba45e55fe605c